Annual Phlox (Phlox drummondii)

Annual Phlox

Phlox drummondii

Dense clusters of tiny blooms paint borders in vivid hues. Herbaceous annual flowering plant; common names: Annual Phlox, Drummond's Phlox.

Full sun
1–2/week
Beginner
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Plant Needs

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Sunlight Full sun to partial shade; produces the most blooms with 6+ hours of direct daily sunlight
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Watering Water thoroughly when the top 2 cm of soil feels dry; avoid overwatering to prevent root rot
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Temperature Thrives in 15–25°C; tolerates light frost but will decline in prolonged temperatures below 10°C
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Characteristics

  • Leaf: Narrow lance-shaped bright green leaves arranged oppositely along stems
  • Flower: Dense terminal clusters of 5-petaled blooms in pink, red, white, purple, or bicolor shades
  • Stem: Slender branching green stems with fine soft hairs
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Care Guide

Watering

Keep soil consistently moist but not waterlogged

Fertilization

Diluted balanced fertilizer every 2 weeks. Use low-nitrogen fertilizer to prioritize flower production over foliage growth

Banana peel tea:Soak 1 chopped banana peel in 1 liter of water for 24 hours; dilute the infusion 1:2 with clean water before drenching soil to avoid overfeeding
Pruning
  • Deadhead spent blooms regularly to encourage continuous flowering throughout the growing season
  • Trim leggy mid-season stems to promote bushier, more compact growth
  • Remove faded foliage at the end of the growing season to prevent overwintering disease spores
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Non-toxic to cats

Humans: No known toxic effects on humans

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Garden Uses & Culture

Culture: Symbolizes harmony and unity; a staple in traditional cottage garden aesthetics

Usage: Ornamental for garden borders, hanging baskets, and cut flower arrangements; attracts butterflies and native pollinators